Receive the latest national-international updates in your inbox

This photo provided by the Harris County Sheriff's Office shows an image taken from surveillance video of a pickup whose driver, according to authorities, fired several shots into a car carrying a family, killing a 7-year-old girl and wounding the child's mother, Sunday, Dec. 30, 2018, in the Houston area.

Investigators in Houston said Monday that they have a surveillance video image of a pickup truck from which a driver fired several shots into a car carrying a family, killing a 7-year-old girl and wounding the child's mother.

Sheriff Ed Gonzalez declined to speculate on what prompted the driver of the pickup to pull alongside and fire into the car carrying Jazmine Barnes, three of her sisters and her mother.

Jazmine died at the scene, her mother suffered a gunshot wound to the arm and her 6-year-old sister was injured by shattered glass. The mother, 30-year-old LaPorsha Washington, remained in a hospital Monday.

"I hope with each passing moment his conscience is eating away at him," Gonzalez said, later adding, "Do the right thing and turn yourself in. There's no need for anyone else to be harmed."

Jazmine's father, Christopher Cevilla, who appeared with Gonzalez at Monday's news briefing, pleaded with the public to provide relevant tips to authorities so that an arrest can be made.

"My daughter was 7 years old, loving, caring, very passionate with people, very sweet, just an innocent young girl," Cevilla said. "Very smart in school. There's just a lot of things that's being robbed of me and my family at this moment that we will never be able to get back."